DENVER MUSEUM OF NATURE & SCIENCE ONLINE MAGAZINE
Welcome to the Spring 2025 issue of Catalyst!
On the cover: A selection of Early Jurassic ammonites — Pleurolytoceras hirnicus, Harpoceras radians and Harpoceras algovianus — collected from Germany.
Catalogue numbers: EPI.33553, EPI.33491, EPI.33488.
What These Marine Creatures Can Tell Us about our State’s Fascinating Underwater Past
Local Rocks Disentangle Giant Volcanic Eruptions, Climate Change and Asteroid Impact
How the Museum is Using Tattoo Art and Science in a Novel Way
The Blessing Ceremonies That Opened ‘Angkor: The Lost Empire of Cambodia’
Why a Changing World Means Rethinking Our Relationship with Fire
Gates Planetarium
